Overview

• GPT-5 integrates an intelligent router that automatically directs simple prompts to fast-response modes and complex queries to deep-reasoning subsystems.
• The model delivers significant gains in reasoning accuracy, speed and domain expertise across tasks such as coding, writing, math and healthcare.
• Users can access GPT-5 variants—full, Mini, Nano and Chat—through ChatGPT’s free, Plus, Pro, Team, Enterprise and Edu plans, with free-tier users switching to GPT-5 Mini after hitting a usage cap.
• New “safe completions” safety measures reduce hallucinations and overconfident outputs by providing measured responses or refusing harmful or deceptive requests.
• OpenAI begins a 60-day phase-out of all previous GPT models, after which GPT-5 becomes the default across all tiers and APIs.